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-   -   Kevlar Cord (http://www.oldrocketforum.com/showthread.php?t=18225)

chrism 12-17-2019 09:28 AM

Kevlar Cord
 
Hey guys would this Kevlar cord from Emma kites work as shock cord mounts?

https://www.amazon.com/emma-kites-1...s/dp/B01CXPGN1E

jetlag 12-17-2019 10:29 AM

Absolutely! I use it in every build. I tie a loop at just shy of the front end of the BT, then attach the elastic shock cord to the Kevlar loop using a loop I made in the elastic. Having them attach that way helps to minimize any zippering and is easier on the body tube end. The Kevlar will slice through the BT otherwise.

Hope this helps!

I do love their pricing for this Kevlar cord and the various sizes available. Just don't be in a big hurry, as my orders came across the ocean!

Allen

astronwolf 12-17-2019 11:38 AM

The Emma Kites braided kevlar cord is good. I like the 500-lb. cord for model rockets. It's narrower and more pliable than 1/8" elastic, so it packs into the airframe easily.

jeffyjeep 12-17-2019 04:14 PM

It's what I use also. 100 lb. for 18mm engines, 500 lb for 24mm and larger engines. I anchor it to the engine mount assembly.

ghrocketman 12-17-2019 07:06 PM

I just go with 500lb for everything.

LeeR 12-18-2019 12:24 AM

I have 100 lb. for little rockets, the bigger rockets get heavier cord. I believe itís 350 lb.

jeffyjeep 12-18-2019 09:50 AM

Another thing to consider is to try to get Kevlar that's NOT waxed. The unwaxed keeps knots much better. I've used both and I won't use waxed Kevlar again.

astronwolf 12-18-2019 10:43 AM

The Emma Kites cord on Amazon is not waxed.

tbzep 12-18-2019 10:57 AM

Quote:
Originally Posted by jeffyjeep
Another thing to consider is to try to get Kevlar that's NOT waxed. The unwaxed keeps knots much better. I've used both and I won't use waxed Kevlar again.

Surely there's a navy knot that can handle waxed kevlar. :p

jeffyjeep 12-18-2019 03:02 PM

I use a bowline and/or a lark's head knot for almost everything rocket related and the waxed Kevlar can destabilize either one because the wax acts a lubricant.


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